Ultrasonic cleaner



FIG. 1 is a perspective view of an ultrasonic cleaner, showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left view thereof.

FIG. 5 is a right view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the ultrasonic cleaner in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for an ultrasonic cleaner, as shown and described. 